after two students were killed with a u.s. tank, he performed at a concert where he smashed a model u.s. tank in response. for psy, it's a p.r. nightmare, who has made millions of dollars from "gangnam style." becoming so popular, he headlines this year's american usic awards. made a video with heidi klum. has appeared on "ellen," "the view," and performed for servicemen and women. remarkable for someone whose break out video isn't even in english. now, he's distancing himself from the controversy. saying in a statement, the song i was featured in from eight years ago, was part of a deeply emotional reaction to the war in iraq and the killing of two korean schoolgirls that was part of the overall anti-war sentiment shared by others around the world at that time. i will forever be sorry for any pain i've caused by those words. now, in that apology, psy points out he went to school and lived in the united states. and he understands the sacrifices american servicemen and women have made. as for tomorrow's concert, the white house